Tests: Update `domEqual()` to work with jQuery git

jQuery now returns `null` for empty attributes instead of `undefined`.

Ref gh-1516

diff --git a/tests/unit/testsuite.js b/tests/unit/testsuite.js
index 175fadd971febef0d7f689fc35d59f88a3a7d86a..e03fd8f67a879e2228e59bea94ca55a86c23ce94 100644 (file)
--- a/tests/unit/testsuite.js
+++ b/tests/unit/testsuite.js
@@ -305,11 +305,11 @@ window.domEqual = function( selector, modifier, message ) {
                        result = {};
                $.each( properties, function( index, attr ) {
                        var value = elem.prop( attr );
-                       result[ attr ] = value !== undefined ? value : "";
+                       result[ attr ] = value != null ? value : "";
                });
                $.each( attributes, function( index, attr ) {
                        var value = elem.attr( attr );
-                       result[ attr ] = value !== undefined ? value : "";
+                       result[ attr ] = value != null ? value : "";
                });
                result.style = getElementStyles( elem[ 0 ] );
                result.events = $._data( elem[ 0 ], "events" );